Huben Air GK1 V3+ .25 Cal Semi-Auto PCP Air Pistol, 17-Shot, Walnut Grip, DonnyFL FX Moderator, Hard Case
The Huben GK1 V3+ is a semi-automatic PCP air pistol in .25 caliber with an integrated 17-shot magazine, adjustable iron sights, and a hammerless, black anodized alloy build. This V3+ generation example adds a DonnyFL FX 1/2x20 airgun moderator and comes housed in a fitted hard case with foam cutouts.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal markings from previous handling or use. The bore is bright and clean. Please refer to the pictures for a close look at the surfaces and finish.
What’s Included
- PCP fill probe (for Huben GK1)
- DonnyFL FX Airguns-specific 1/2x20 airgun moderator (.22–.25)
- Fitted hard case with foam cutouts
This V3+ generation GK1 is a semi-automatic PCP design with an integrated, non-removable, auto-rotating 17-shot magazine in .25 (6.35mm). The pistol is marked GK1 and .25 (6.35), with factory QR code and the HUBEN lion logo.
The carbon-fiber–sleeved under-barrel air reservoir is paired with a brass pressure gauge on the right side. Maximum working pressure is 35 MPa (approximately 5000 psi) with an 85 cc reservoir, and a Huben-specific PCP fill probe is included for refills.
Ergonomics and sighting are well executed: a walnut ergonomic target-style grip with finger grooves and partial checkering, plus adjustable iron sights with a green fiber-optic front blade and a rear notch adjustable for windage (factory setup: front elevation, rear windage).
Customization includes a DonnyFL FX-specific airgun moderator installed. Donnyfl Model FX noise reduction silencer for airgun use only. 1/2x20 thread, .22-.25 Cal.
The hammerless action and black anodized alloy frame and receiver give the GK1 a durable, modern finish. Country of origin is China, and this V3+ variant represents a recent release in the GK1 series.




